Sulfur hexafluoride recovery device and sulfur hexafluoride recovery vehicle

Abstract

The invention discloses a sulfur hexafluoride recovery device. The device comprises a sulfur hexafluoride electrical-unit interface, a recovery container, and a pressure regulating valve, a compressor inlet valve, a compressor, a condenser inlet valve, a condenser and a condenser outlet valve which are successively arranged between the sulfur hexafluoride electrical-unit interface and the recovery container, wherein a vacuum-gauge bypass is arranged between the sulfur hexafluoride electrical-unit interface and the pressure regulating valve, and comprises a vacuum gauge and a vacuum-gauge control valve connected with the vacuum gauge; a vacuum-pump bypass is arranged between the pressure regulating valve and the compressor inlet valve, and comprises a first vacuum pump and a first vacuum pump inlet valve connected with the first vacuum pump; and a negative pressure recovery pipeline is parallelly connected with the two ends of the compressor inlet valve. The sulfur hexafluoride recovery device provided by the invention realizes replacement of sulfur hexafluoride used for power grid GIS and achieves a purpose of reducing greenhouse gas emission. Moreover, the invention also provides a sulfur hexafluoride recovery vehicle.

Description

technical field [0001] The invention relates to the technical field of greenhouse gas emission reduction, in particular to a sulfur hexafluoride recovery device and a sulfur hexafluoride recovery vehicle. Background technique [0002] In the power industry, sulfur hexafluoride gas is used for insulation and arc extinguishing of electrical equipment, SF 6 Circuit breakers and GIS (here refers to sulfur hexafluoride closed combination electrical appliances, known internationally as "gas insulated switchgear" (GasInsulatedSwitchgear), SF 6 Load switchgear, SF 6 Insulated Transmission Lines, SF 6 Transformer and SF 6 Insulated substations are the main area. In an environment up to 180°C, it is well compatible with metals in electrical equipment, and can operate above 180°C, SF 6 The superior performance of the gas enables economical installations and low-maintenance operations. As insulation and arc extinguishing medium, no other technology can surpass SF from a technical,...

AI Technical Summary

Problems solved by technology

[0006] 2. Impurities generated in switchgear

[0008] 3. Impurities generated by internal arc

[0013] Since the moisture in the gas exists in the form of water vapor, when the temperature drops, it may condense inside the equipment and adhere to the surface of the equipment such as the surface of electrodes and insulators, which is prone to surface discharge (flashover) and cause accidents;

[0014] Polyfluorocarbons (C 2 f 6 、C 3 f 8 ) Under high voltage, elemental carbon may be produced to form carbon on the surface of the equipment, which will cause damage to the insulation performance;

[0015] Sulfuryl fluoride will cause harm to human body and environment after entering the atmosphere

[0016] It can be seen that the decomposition products in sulfur hexafluoride gas are harmful to operating equipment, and there are environmental safety risks. Periodic testing of sulfur hexafluoride gas should be carried out, and sulfur hexafluoride operating gas that does not meet the operating safety conditions of electrical equipment should be replaced.

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